What mechanism suppresses melatonin release in humans?To clarify: I know that SCN makes a decision to suppress melatonin. What interests me is what takes place during the actual process of suppression. What physically ensures that pineal gland stops producing melatonin. Is it another hormone that is released?

Expanding the SETI initiative to seek intelligent data within DNA sequences?Very good point. What originally inspired the question was that the "data in DNA" encoding linked in the question uses very short 96 bit "packets", preceded by a 19 bit addressing sequence. While the payload can vary, the presence of the address within each packet gives hope of detection. As far as I understand, this is how genes are detected - by their promoter/terminator sites.